期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 114, 期 1, 页码 242-246出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2008.09.045
关键词
Apatite; High-temperature solid-state reaction; Luminescence; Decay time
资金
- National Basic Research Program of China [2007CB935502]
- Science and Technology Project of Guangdong Province [2005A10609001]
- Science and Technology Projectof Guangzhou [2005Z2-DO061]
A series of chalcogenide apatites phosphors Ca-10(PO4)(6)Y:Ce (Y = S, Se) were prepared using high-temperature solid-state reaction technique. Their luminescent spectra together with decay time spectra at room temperature were investigated and discussed. The results revealed that Ca(I) sites are preferentially occupied at low-doping concentration, and Ca(II) sites are dominant with the increasing of concentration for Ce3+ in Ca-10(PO4)(6)S. In contrast, Ce3+ ions mainly occupied the Ca(II) sites in Ca-10(PO4)(6)Se even at lower doping concentration. For the iso-structure apatites M-10(PO4)(6)Y (M = Ca, Y = 2F, S), the different anions Y surrounding M(II) have little influence on the M(I)-O character. (C) 2008 Elsevier B.V. All rights reserved.
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